[INFO] updating cached repository TBeihammer/Snake
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TBeihammer/Snake
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TBeihammer/Snake" "work/ex/clippy-test-run/sources/stable/gh/TBeihammer/Snake"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/TBeihammer/Snake'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TBeihammer/Snake" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/TBeihammer/Snake"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/TBeihammer/Snake'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0ca57e1ed2f23c386c2c5b45af67c3bf272f86ad
[INFO] sha for GitHub repo TBeihammer/Snake: 0ca57e1ed2f23c386c2c5b45af67c3bf272f86ad
[INFO] validating manifest of TBeihammer/Snake on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TBeihammer/Snake on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing TBeihammer/Snake
[INFO] finished frobbing TBeihammer/Snake
[INFO] frobbed toml for TBeihammer/Snake written to work/ex/clippy-test-run/sources/stable/gh/TBeihammer/Snake/Cargo.toml
[INFO] started frobbing TBeihammer/Snake
[INFO] finished frobbing TBeihammer/Snake
[INFO] frobbed toml for TBeihammer/Snake written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/TBeihammer/Snake/Cargo.toml
[INFO] crate TBeihammer/Snake has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting TBeihammer/Snake against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/TBeihammer/Snake:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8b70e928946788329adc1606715b50b3035029937c1bb4d7683d358395ff9835
[INFO] running `"docker" "start" "-a" "8b70e928946788329adc1606715b50b3035029937c1bb4d7683d358395ff9835"`
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking wayland-sys v0.7.8
[INFO] [stderr]     Checking wayland-client v0.7.8
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]     Checking wayland-window v0.4.4
[INFO] [stderr]     Checking wayland-kbd v0.6.3
[INFO] [stderr]     Checking winit v0.5.11
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.40.0
[INFO] [stderr]     Checking glutin v0.7.4
[INFO] [stderr]     Checking pistoncore-glutin_window v0.35.1
[INFO] [stderr]     Checking Snake v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/snake.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     NoCollision,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/snake.rs:256:9
[INFO] [stderr]     |
[INFO] [stderr] 256 |         rect       
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/snake.rs:254:20
[INFO] [stderr]     |
[INFO] [stderr] 254 |           let rect = graphics::rectangle::rectangle_by_corners(snake_pos_x - block_size_x * 0.5, snake_pos_y - block_size_y * 0.5, 
[INFO] [stderr]     |  ____________________^
[INFO] [stderr] 255 | |             snake_pos_x + block_size_x * 0.5, snake_pos_y + block_size_y * 0.5);
[INFO] [stderr]     | |_______________________________________________________________________________^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/snake.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     NoCollision,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/snake.rs:256:9
[INFO] [stderr]     |
[INFO] [stderr] 256 |         rect       
[INFO] [stderr]     |         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/snake.rs:254:20
[INFO] [stderr]     |
[INFO] [stderr] 254 |           let rect = graphics::rectangle::rectangle_by_corners(snake_pos_x - block_size_x * 0.5, snake_pos_y - block_size_y * 0.5, 
[INFO] [stderr]     |  ____________________^
[INFO] [stderr] 255 | |             snake_pos_x + block_size_x * 0.5, snake_pos_y + block_size_y * 0.5);
[INFO] [stderr]     | |_______________________________________________________________________________^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fruit`
[INFO] [stderr]    --> src/snake.rs:133:34
[INFO] [stderr]     |
[INFO] [stderr] 133 |             Collision::WithFruit(fruit) =>{
[INFO] [stderr]     |                                  ^^^^^ help: consider using `_fruit` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fruit`
[INFO] [stderr]    --> src/snake.rs:133:34
[INFO] [stderr]     |
[INFO] [stderr] 133 |             Collision::WithFruit(fruit) =>{
[INFO] [stderr]     |                                  ^^^^^ help: consider using `_fruit` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:341:16
[INFO] [stderr]     |
[INFO] [stderr] 341 |                mut window: &mut Window,
[INFO] [stderr]     |                ----^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:342:16
[INFO] [stderr]     |
[INFO] [stderr] 342 |                mut gl: &mut GlGraphics,
[INFO] [stderr]     |                ----^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:343:16
[INFO] [stderr]     |
[INFO] [stderr] 343 |                mut e: &mut Events,
[INFO] [stderr]     |                ----^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:344:16
[INFO] [stderr]     |
[INFO] [stderr] 344 |                mut glyph_cache: &mut GlyphCache){
[INFO] [stderr]     |                ----^^^^^^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LIGHTBLUE`
[INFO] [stderr]   --> src/snake.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub const LIGHTBLUE: [f32; 4] = [0.0, 1.0, 1.0, 1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ORANGE`
[INFO] [stderr]   --> src/snake.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub const ORANGE: [f32; 4] = [1.0, 0.5, 0.0, 1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PINK`
[INFO] [stderr]   --> src/snake.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub const PINK: [f32; 4] = [1.0, 0.0, 1.0, 1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ANGEL`
[INFO] [stderr]   --> src/snake.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub const ANGEL: [f32; 4 ] = [0.5,0.5,1.0,0.5];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GREEN`
[INFO] [stderr]   --> src/snake.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub const GREEN: [f32; 4 ] = [0.0,0.5,0.0,1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Snake` should have a snake case name such as `snake`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/snake.rs:83:25
[INFO] [stderr]    |
[INFO] [stderr] 83 |         let center_x = ((width as f64) * 0.5) as i32;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: try: `f64::from(width)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/snake.rs:84:25
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let center_y = ((height as f64) * 0.5) as i32;       
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^ help: try: `f64::from(height)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/snake.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn is_collision(&mut self) -> Collision{
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:341:16
[INFO] [stderr]     |
[INFO] [stderr] 341 |                mut window: &mut Window,
[INFO] [stderr]     |                ----^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:342:16
[INFO] [stderr]     |
[INFO] [stderr] 342 |                mut gl: &mut GlGraphics,
[INFO] [stderr]     |                ----^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:343:16
[INFO] [stderr]     |
[INFO] [stderr] 343 |                mut e: &mut Events,
[INFO] [stderr]     |                ----^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/snake.rs:344:16
[INFO] [stderr]     |
[INFO] [stderr] 344 |                mut glyph_cache: &mut GlyphCache){
[INFO] [stderr]     |                ----^^^^^^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LIGHTBLUE`
[INFO] [stderr]   --> src/snake.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub const LIGHTBLUE: [f32; 4] = [0.0, 1.0, 1.0, 1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ORANGE`
[INFO] [stderr]   --> src/snake.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub const ORANGE: [f32; 4] = [1.0, 0.5, 0.0, 1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PINK`
[INFO] [stderr]   --> src/snake.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub const PINK: [f32; 4] = [1.0, 0.0, 1.0, 1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ANGEL`
[INFO] [stderr]   --> src/snake.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub const ANGEL: [f32; 4 ] = [0.5,0.5,1.0,0.5];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GREEN`
[INFO] [stderr]   --> src/snake.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub const GREEN: [f32; 4 ] = [0.0,0.5,0.0,1.0];
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Snake` should have a snake case name such as `snake`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/snake.rs:83:25
[INFO] [stderr]    |
[INFO] [stderr] 83 |         let center_x = ((width as f64) * 0.5) as i32;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^ help: try: `f64::from(width)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/snake.rs:84:25
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let center_y = ((height as f64) * 0.5) as i32;       
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^ help: try: `f64::from(height)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `is_*` usually take self by reference or no self; consider choosing a less ambiguous name
[INFO] [stderr]    --> src/snake.rs:109:21
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn is_collision(&mut self) -> Collision{
[INFO] [stderr]     |                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/snake.rs:130:34
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn on_update(&mut self, upd: &UpdateArgs){            
[INFO] [stderr]     |                                  ^^^^^^^^^^^ help: consider passing by value instead: `UpdateArgs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/snake.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |             self.snake_head.pos_x = self.snake_head.pos_x + x;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.snake_head.pos_x += x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/snake.rs:130:34
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn on_update(&mut self, upd: &UpdateArgs){            
[INFO] [stderr]     |                                  ^^^^^^^^^^^ help: consider passing by value instead: `UpdateArgs`
[INFO] [stderr]     |
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/snake.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |             self.snake_head.pos_y = self.snake_head.pos_y + y;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.snake_head.pos_y += y`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/snake.rs:181:13
[INFO] [stderr]     |
[INFO] [stderr] 181 |             self.snake_head.pos_x = self.snake_head.pos_x + x;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.snake_head.pos_x += x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/snake.rs:182:13
[INFO] [stderr]     |
[INFO] [stderr] 182 |             self.snake_head.pos_y = self.snake_head.pos_y + y;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.snake_head.pos_y += y`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:250:28
[INFO] [stderr]     |
[INFO] [stderr] 250 |         let block_size_x = (args.width as f64) / (self.dimensions[0] as f64);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:250:50
[INFO] [stderr]     |
[INFO] [stderr] 250 |         let block_size_x = (args.width as f64) / (self.dimensions[0] as f64);
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:251:28
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let block_size_y = (args.height as f64) / (self.dimensions[1] as f64);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:251:51
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let block_size_y = (args.height as f64) / (self.dimensions[1] as f64);
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[1])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:252:27
[INFO] [stderr]     |
[INFO] [stderr] 252 |         let snake_pos_x = (pos_x as f64) * block_size_x;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: try: `f64::from(pos_x)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:253:27
[INFO] [stderr]     |
[INFO] [stderr] 253 |         let snake_pos_y = (pos_y as f64) * block_size_y;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: try: `f64::from(pos_y)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:280:30
[INFO] [stderr]     |
[INFO] [stderr] 280 |             let line_width = (args.width as f64) / (self.dimensions[0] as f64) * 0.5;
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:280:52
[INFO] [stderr]     |
[INFO] [stderr] 280 |             let line_width = (args.width as f64) / (self.dimensions[0] as f64) * 0.5;
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:281:31
[INFO] [stderr]     |
[INFO] [stderr] 281 |             let line_height = (args.height as f64) / (self.dimensions[1] as f64) * 0.5;
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:281:54
[INFO] [stderr]     |
[INFO] [stderr] 281 |             let line_height = (args.height as f64) / (self.dimensions[1] as f64) * 0.5;
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[1])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:284:33
[INFO] [stderr]     |
[INFO] [stderr] 284 |                 [0.0, 0.0, 0.0, args.height as f64],
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:289:18
[INFO] [stderr]     |
[INFO] [stderr] 289 |                 [args.width as f64, 0.0, args.width as f64, args.height as f64],
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:289:42
[INFO] [stderr]     |
[INFO] [stderr] 289 |                 [args.width as f64, 0.0, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:289:61
[INFO] [stderr]     |
[INFO] [stderr] 289 |                 [args.width as f64, 0.0, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:250:28
[INFO] [stderr]     |
[INFO] [stderr] 250 |         let block_size_x = (args.width as f64) / (self.dimensions[0] as f64);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:294:28
[INFO] [stderr]     |
[INFO] [stderr] 294 |                 [0.0, 0.0, args.width as f64, 0.0],
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:299:23
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 [0.0, args.height as f64, args.width as f64, args.height as f64],
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:299:43
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 [0.0, args.height as f64, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:299:62
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 [0.0, args.height as f64, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:250:50
[INFO] [stderr]     |
[INFO] [stderr] 250 |         let block_size_x = (args.width as f64) / (self.dimensions[0] as f64);
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:251:28
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let block_size_y = (args.height as f64) / (self.dimensions[1] as f64);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:251:51
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let block_size_y = (args.height as f64) / (self.dimensions[1] as f64);
[INFO] [stderr]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[1])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:252:27
[INFO] [stderr]     |
[INFO] [stderr] 252 |         let snake_pos_x = (pos_x as f64) * block_size_x;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: try: `f64::from(pos_x)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:253:27
[INFO] [stderr]     |
[INFO] [stderr] 253 |         let snake_pos_y = (pos_y as f64) * block_size_y;
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: try: `f64::from(pos_y)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/snake.rs:322:21
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     format!("Game over! Press Space to restart, Escape to quit!")
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Game over! Press Space to restart, Escape to quit!".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/snake.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 | /                 match button {
[INFO] [stderr] 351 | |                     Button::Keyboard(key) => self.on_keypress(key),
[INFO] [stderr] 352 | |                     _ => {} 
[INFO] [stderr] 353 | |                 }
[INFO] [stderr]     | |_________________^ help: try this: `if let Button::Keyboard(key) = button { self.on_keypress(key) }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:280:30
[INFO] [stderr]     |
[INFO] [stderr] 280 |             let line_width = (args.width as f64) / (self.dimensions[0] as f64) * 0.5;
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:280:52
[INFO] [stderr]     |
[INFO] [stderr] 280 |             let line_width = (args.width as f64) / (self.dimensions[0] as f64) * 0.5;
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:281:31
[INFO] [stderr]     |
[INFO] [stderr] 281 |             let line_height = (args.height as f64) / (self.dimensions[1] as f64) * 0.5;
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:281:54
[INFO] [stderr]     |
[INFO] [stderr] 281 |             let line_height = (args.height as f64) / (self.dimensions[1] as f64) * 0.5;
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(self.dimensions[1])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:284:33
[INFO] [stderr]     |
[INFO] [stderr] 284 |                 [0.0, 0.0, 0.0, args.height as f64],
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:289:18
[INFO] [stderr]     |
[INFO] [stderr] 289 |                 [args.width as f64, 0.0, args.width as f64, args.height as f64],
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:289:42
[INFO] [stderr]     |
[INFO] [stderr] 289 |                 [args.width as f64, 0.0, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:289:61
[INFO] [stderr]     |
[INFO] [stderr] 289 |                 [args.width as f64, 0.0, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:294:28
[INFO] [stderr]     |
[INFO] [stderr] 294 |                 [0.0, 0.0, args.width as f64, 0.0],
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:299:23
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 [0.0, args.height as f64, args.width as f64, args.height as f64],
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:299:43
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 [0.0, args.height as f64, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                           ^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/snake.rs:299:62
[INFO] [stderr]     |
[INFO] [stderr] 299 |                 [0.0, args.height as f64, args.width as f64, args.height as f64],
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(args.height)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/snake.rs:322:21
[INFO] [stderr]     |
[INFO] [stderr] 322 |                     format!("Game over! Press Space to restart, Escape to quit!")
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Game over! Press Space to restart, Escape to quit!".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/snake.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 | /                 match button {
[INFO] [stderr] 351 | |                     Button::Keyboard(key) => self.on_keypress(key),
[INFO] [stderr] 352 | |                     _ => {} 
[INFO] [stderr] 353 | |                 }
[INFO] [stderr]     | |_________________^ help: try this: `if let Button::Keyboard(key) = button { self.on_keypress(key) }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.68s
[INFO] running `"docker" "inspect" "8b70e928946788329adc1606715b50b3035029937c1bb4d7683d358395ff9835"`
[INFO] running `"docker" "rm" "-f" "8b70e928946788329adc1606715b50b3035029937c1bb4d7683d358395ff9835"`
[INFO] [stdout] 8b70e928946788329adc1606715b50b3035029937c1bb4d7683d358395ff9835